DE1135410B - Process for increasing the edition of oil preparations on fully synthetic threads u. like - Google Patents

Description

There is one for knitting and knitting fully synthetic threads, yarns and twines Oil layer on the threads required to improve gliding of the threads over the various Management organs of the knitting and warp-knitting machines to achieve the metal abrasion, which is known as the so-called Sinker strips in the knitted raw material makes noticeable, diminish and finally is in some cases an increase in the weight of the threads is desirable. Do not need sutures prepared with oil increased drainage tension, which, as will be discussed later, has detrimental consequences for the knitted fabric.

The application height of the oil preparations, in the knitting and knitting factories mostly referred to as winding oils, can be increased by using higher-viscosity oils, mineral oils of various degrees of refinement with and without the addition of emulsifiers are used for this, if necessary used in a mixture with vegetable or animal oils for use as winding oils. Oils with viscosities between 4 and 8 ° E / 20 ° C. are common can be achieved with higher viscosity winding oils, however, the processor must use increased drainage stresses Take purchase. For example, from crimped crepe yarn prepared in this way made from fully synthetic fibers Goods knitted under increased drainage tension show after leaving the knitting machines Shrinkages of 30% and more. This makes them unusable for one use. So it is It is desirable to achieve high oil levels with low-viscosity oils that require processing of synthetic ones Allow threads, yarns or twines at low drainage tensions.

It has been found that additions of dimethylsiloxane oils with a viscosity between 60 and 500 cSt / 20 ^o C to the commonly used mineral oils or mineral oil mixtures with saponifiable oils and / or emulsifiers surprisingly allow a multiple increase in the amount of oil on synthetic threads without this increases the viscosity of the winding oils. The dimethylsiloxane oils are advantageously used in amounts of more than 0.03 percent by weight, calculated on the oil content of the winding oil. With the addition of 0.1% dimethylsiloxane oils it is already possible to triple or quadruple the amount of oil applied without the addition of emulsifiers impairing this effect. The dimethylsiloxane oil additives also prevent skin formation on the winding baths in the case of emulsifier-containing winding oils, which often gives rise to unpleasant operational malfunctions.

In the Belgian patent specification 541 725 the ver

of oil preparations
on fully synthetic threads and the like.

Applicant:

Dr. Th. Böhme KG, chemical factory,
Gartenberg via Wolfsratshausen (Obb.)

Herbert Bruschek,

Weidach Post Wolfratshausen (Obb.),
has been named as the inventor

Use of high molecular weight dimethylsiloxanes with viscosities of more than 200,000 cP in quantities from 3 to 10% based on the weight of the fiber to prevent other materials from sticking or sticking to the Prevent fiber material. In contrast, low-viscosity dimethylsiloxanes are used in the present process in amounts that lower by powers of ten, an increased loading of the fiber material with lubricants or glidants to achieve.

The experiments listed in the examples below were all carried out under the same conditions drove. The thread speed was 180 m per minute. The fountain roller made 6 revolutions per minute in the direction of the thread running. The thread tension was 3 g. The temperature was in each case at 25 ° C and 65% relative humidity.

example 1

A crêpe yarn 90/2 raw white is wound with a mineral oil of 7.4 ° E / 20 ° C. The edition is 2 ⁰ zo, based on the weight of the goods. When winding with the same oils with the addition of 0.1% dimethylsiloxane oil at 100 ° cSt / 20 ° C with unchanged viscosity, 6% oil coating is determined. The yarn runs with the same low unwinding tension. The fabric knitted from it is almost completely free of platinum stripes. The addition of emulsifiers such as ethoxylated alkylphenol, ethoxylated fatty alcohol or anionic emulsifiers such as fatty alcohol sulfates, saponified alkanesulfochlori-

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ration products or other sulfonates did not affect the relative oil deposition.

Example 2

A dyed Kreppgarn 90/2 is wound with a paraffin oil of 4.6 ° E / 2O ⁰ C. The oil level is 1%. The same oil with the addition of 0.1% dimethylsiloxane oil of 200cSt / 20 ° C produces a circulation of 3.2%. If 80 parts of the paraffin oil mentioned are mixed with 20 parts of oleic acid triglyceride and 0.1% dimethylsiloxane oil is added, the result is the same increase in run length during winding, regardless of the class of dye used to dye the yarn.

Example 3

A yarn made of polyester material raw white with a titer 100/36/350 S is made with a mineral oil fraction spooled from 2 ° E / 20 ° C. The overlay is 0.4% after winding. After adding 0.1% dimethyl ao Siloxane oil of 270 cSt / 20 ° C becomes 1.1% oil layer determined. A mixture of the same mineral oil fraction mixed in equal parts with sperm oil filtrate with or without the addition of 0.1% dimethylsiloxane oil also triples the oil layer.

Claims (3)

PATENT CLAIMS: 1. A method for increasing the oil application of preparations on fully synthetic threads and the like, characterized in that dimethylsiloxane oils with a viscosity of 60 to 500 cSt / 20 ° C are added to the preparations. 2. The method according to claim 1, characterized in that at least 0.03% dimethylsiloxane oils are added. 3. The method according to claim 1 and 2, characterized in that the mineral oil and dimethylsiloxane oil Saponifiable oils and / or emulsifiers are added to preparations. Considered publications:
Belgian Patent No. 541725;
U.S. Patent No. 2,807,557. © 209 638/362 8.62